JEE CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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Analyzing +4 | -1

Incorrect statement is/are :

a. Maximum element containing group is third

b. Te is

1^{\text {st }}

man made radioactive element

c. Law of octave is valid only upto atomic no. 20.

d. Li-Mg pair shows diagonal relationship.

View answer and explanation

Correct option: D

Only b

Option D (Only b) is correct because Technetium (Tc) is the first man-made radioactive element, not Tellurium (Te).

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